Bitmap images (Edexcel GCSE Computer Science): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What are bitmap images made up of?
What are bitmap images made up of?
Tiny colored dots called pixels
What is the term 'pixel' short for?
What is the term 'pixel' short for?
Picture element
How many total pixels are in a pixel image?
How many total pixels are in a pixel image?
3,000,000 pixels
What does colour depth determine?
What does colour depth determine?
How many colors each pixel can display
How many colors can 1 bit per pixel display?
How many colors can 1 bit per pixel display?
2 colors
How many colors can 24 bits per pixel display?
How many colors can 24 bits per pixel display?
16,777,216 colors
Using , how many colors can 8 bits give?
Using , how many colors can 8 bits give?
256 colors
What does resolution describe?
What does resolution describe?
Pixels per inch when displayed/printed
What happens when you enlarge a small image too much?
What happens when you enlarge a small image too much?
It becomes pixelated and blocky
What is the formula for image file size in bits?
What is the formula for image file size in bits?
What is the file size in bits of a pixel image with 8-bit colour depth?
What is the file size in bits of a pixel image with 8-bit colour depth?
40,000 bits
To convert file size from bits to bytes, what do you divide by?
To convert file size from bits to bytes, what do you divide by?
8